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"The mailbox location could not be determined" error when testing and enabling a mailbox in Dynamics 365

  • Článok

This article provides a solution to an error that occurs when you try to test and enable a mailbox in Microsoft Dynamics 365.

Applies to:   Microsoft Dynamics 365
Original KB number:   4513810

Symptoms

When you try to test and enable a mailbox in Dynamics 365, the test results section shows Failure, and one of the following alerts is logged:

  • The mailbox location could not be determined while sending the email message "Your mailbox is now connected to Dynamics 365". Mailbox <Mailbox Name> didn't synchronize. The owner of the associated email server profile <Email Server Profile Name> has been notified.

  • The location of the mailbox <Mailbox Name> could not be determined while receiving email. The owner of the associated email server profile <Email Server Profile Name> has been notified. The system will try to receive email again later.

Cause

The alerts can occur when connecting to Exchange on-premises and the email server profile record in Dynamics 365 is configured with the Auto Discover Server Location setting set to Yes. When this option is enabled, you don't need to provide your Exchange Web Services (EWS) URL. Instead, Dynamics 365 tries to use Autodiscover for Exchange to retrieve the correct location. If there are issues with the Autodiscover service or it isn't configured correctly, the alerts might occur.

Resolution

To resolve this issue, you can either fix the Autodiscover issue with Exchange or change the Auto Discover Server Location setting to No and provide the EWS URL.

Follow these steps to change the Auto Discover Server Location setting:

  1. Sign in to the Dynamics 365 web application as a user with the "System Administrator" security role.

  2. Navigate to Settings > Email Configuration > Email Server Profiles.

  3. Open your email server profile record for your Exchange on-premises configuration.

  4. Change the Auto Discover Server Location setting to No.

  5. Enter your EWS URL in the Incoming Server Location and Outgoing Server Location fields. For example, https://mail.yourdomain.com/EWS/Exchange.asmx.

  6. Select Save.

  7. Test and enable the mailbox again.